I realise that the aperture was chosen to emphasise the man fishing and to throw the rest of the image out of focus, but I feel it has been taken too far here. The white rock in the foreground, and most of the background, almost looks to have been blurred by camera shake (surely not possible at 1/6400th!) and is a real distraction.
I do like the overall composition.

Ciao Giovanni
I am not sure if the extreme shallow DOF really works for this kind of subject. While the main subject, which is the fisher is perfectly sharp, the surroundings are thrown out of focus a bit to much for my liking. A deeper DOF would put the man more in context with his surroundings which seem pleasant enough.
have a great sunday
Daniel